21419044 has 12 divisors (see below), whose sum is σ = 37544668. Its totient is φ = 10692000.

The previous prime is 21419011. The next prime is 21419059. The reversal of 21419044 is 44091412.

It can be written as a sum of positive squares in 2 ways, for example, as 20142144 + 1276900 = 4488^2 + 1130^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1407 + ... + 6694.

Almost surely, 2^21419044 is an apocalyptic number.

It is an amenable number.

21419044 is a deficient number, since it is larger than the sum of its proper divisors (16125624).

21419044 is a wasteful number, since it uses less digits than its factorization.

21419044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8766 (or 8764 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 21419044 is about 4628.0713045501. The cubic root of 21419044 is about 277.7154412772.

The spelling of 21419044 in words is "twenty-one million, four hundred nineteen thousand, forty-four".